linux-kernel - Re: [PATCH v2 6/6] kbuild: enable -Werror for hostprogs

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Message-ID: <CANiq72m+_QK1L2bnjs-oB9fmoGb-1jK3JvOsuH3nsWaPM0ExNg@mail.gmail.com>
Date: Sun, 17 Aug 2025 18:31:06 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Cc: Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas.schier@...ux.dev>, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v2 6/6] kbuild: enable -Werror for hostprogs

On Thu, Aug 14, 2025 at 12:15 PM Thomas Weißschuh
<thomas.weissschuh@...utronix.de> wrote:
>
> The hostprog compilers and linkers do not share the regular compiler flags,
> so they are not affected by CONFIG_WERROR or W=e. As hostprogs are used
> during the bootstrap of the build, they can't depend on kconfig options.
>
> Enable -Werror unconditionally.
>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
>
> ---
> For testing in -next, as discussed in
> https://lore.kernel.org/lkml/20250812-kbuild-werror-v1-2-36c9ff653700@linutronix.de/

The discussion was on patch 0, i.e. the next message in Lore's tree
view -- I would suggest adding it to the commit message for reference:

Link: https://lore.kernel.org/rust-for-linux/CANiq72k-PdSH2BNgbq=X+FhpyEErifSCKfO5ObXz6bu9_J8+fA@mail.gmail.com/

Anyway, since Nathan already applied it, and I see a couple patches on
top, no big deal if it cannot be added.

Thanks!

Cheers,
Miguel